Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"dung phan cham snippets" » "dung nhan cham snippets", "dung luan cham snippets", "dung ha cham snippets", "dung phan cam snippets", "dung phan chat snippets", "dung phan ham snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("dung java java snippets") or ("dung phan cham snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("dung phan cham snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( dung phan cham snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("dung phan cham snippets"))) or ("locating bug code snippets"))*.